Goto:
[link|http://advocacy.postgresql.org|http://advocacy.postgresql.org]
And do what you need to do to make them know you are seriously looking at spending money.
Of course the greatest thing would be to GNU GPLv2+ it as well.
Or you could also subscribe to some [link|http://www.postgresql.org/lists.html|Mailing Lists]
Or Heck, even pay for a contract to DO the work and guarantee updates to it and so on. All ya gotta do is ask. PG will scale and it feels more righter than MySQL does a lot of the time.
